From owner-freebsd-mobile  Sun Oct 28 12:47: 2 2001
Delivered-To: freebsd-mobile@freebsd.org
Received: from w2xo.pgh.pa.us (18.gibs5.xdsl.nauticom.net [209.195.184.19])
	by hub.freebsd.org (Postfix) with ESMTP
	id EA09037B405; Sun, 28 Oct 2001 12:46:57 -0800 (PST)
Received: from localhost (localhost [127.0.0.1])
	by w2xo.pgh.pa.us (8.11.6/8.11.3) with ESMTP id f9SKkmt17064;
	Sun, 28 Oct 2001 15:46:52 -0500 (EST)
	(envelope-from durham@w2xo.pgh.pa.us)
Date: Sun, 28 Oct 2001 15:46:48 -0500 (EST)
From: Jim Durham <durham@w2xo.pgh.pa.us>
To: John Baldwin <jhb@FreeBSD.ORG>
Cc: freebsd-mobile@FreeBSD.ORG
Subject: RE: Inspiron crashes with 4.4-RELEASE
In-Reply-To: <XFMail.011028090139.jhb@FreeBSD.org>
Message-ID: <Pine.BSF.4.21.0110281534290.16532-100000@w2xo.pgh.pa.us>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-freebsd-mobile@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-mobile.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-mobile>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-mobile>
X-Loop: FreeBSD.org



Jim Durham


On Sun, 28 Oct 2001, John Baldwin wrote:

> 
> On 28-Oct-01 Jim Durham wrote:
> > After running 4.3 RELEASE beautifully for about 6 months, my
> > Dell Inspiron 4000 won't run after installing 4.4-RELEASE.
> > 
> > The system  panics and reboots thusly:
> > 
> > ukphy0: <Generic IEEE 802.3u media interface> on miibus0
> > ukphy0: no media present
> > (following in "dim" text)
> > ootOct 28 08:49:42 jimslaptop pccardd[123]: ed1 D-Link (DFE-650) inserted
> > 
> > (back to bright text)
> > 
> > Fatal trap 12: page fault while in kernel mode
> > fault virtual address = 0x8
> > fault code            = supervisor read, page not present
> > instruction pointer   = 0x8:0xc03a38a0
> > stack pointer         = 0x10:0xcc25fb48
> > frame pointer         = 0x10:0xcc25fb54
> > code segment          = base 0x0, limit 0xfffff, type 0x1b
> >                       = DPL 0, pres 1, def32 1, gran1
> > processor eflags      = interrupt enables, resume, IOPL = 0
> > current process               = 322 (ifconfig)
> > interrupt mask                = net tty
> > trap number           = 12
> > panic: page fault
> > 
> > syncing disks.. 22 22
> > done
> > Uptime: 3m40s
> > Automatic reboot in 15 seconds - press a key on the console to abort
> > 
> > etc, etc
> > 
> > Looks like it is concerned with ifconfig'ing the D-LINK DFE-650 card.
> > This is done with dhcp.
> > 
> > 
> > I have also filed a bug report.
> > 
> > 
> > I didn't see this in the archives or open bug listings.
> 
> Please compile ddb into your kernel and get a stack trace.  It is a simple NULL
> pointer dereference that can probably be fixed easily if enough info is
> provided.
> 

More information:

If I set a breakpoint at ukphy_service, it page faults on the
call and reports the address as ukphy_service+48.

I'm looking at mii_mediachg() in mii.c and I see no call to
ukphy_service.

What's going on here? It looks like mii_mediachg is calling some
bogus address in the middle of ukphy_service or something.

-Jim



To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-mobile" in the body of the message